"It's fun to see employees get rewarded for doing a good job," said one mystery shopper who did not want to be identified. "You can also help a company find out where they need to improve their customer service, there's a lot of fun benefits to it in addition to the money."

Market Force said it will hire as many people as they can that meet the requirements, however the work is not full-time.

Basic Requirements:

Must be 20 years old

Have a minimum of a high school education

Have computer access

Most mystery shopping assignments require a digital watch or stopwatch